The Montgomery is a drink which consists of Gin, and Vermouth.
Also known as "A visit with the General".
Created by Ernest Hemingway at Harry's Bar, Venice. Named for Sir Bernard Law Montgomery of the British Eighth Army, the drink's proportions of gin to vermouth (at 15 to 1) are said to represent the General's requirement for outnumbering the enemy prior to engagement.
15 parts Gin to 1 part Dry Vermouth, i.e 3 3/4oz Gin, 1/4oz Dry Vermouth, shaken or stirred and served "up" in a cocktail glass.
The total volume of the drink may vary but the proportions should allways remain 15:1